Fair Value Measurements (Details) - USD ($) $ in Millions		Sep. 30, 2021		Dec. 31, 2020		Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative Asset		$ 57		$ 55		$ 126
Derivative Liability		40		135		97
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Equity Securities,	[1]	75
Assets at Fair Value		75		226
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 | US Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Debt Securities, Available-for-sale	[2]			226
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets at Fair Value		160		98		278
Liabilities at Fair Value		40		135		97
Marketable Securities		103		43		152
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Currency Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative Asset		57	[3]	55	[3]	125
Derivative Liability		$ 40	[3]	$ 135	[3]	96
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative Asset	[3]					1
Derivative Liability	[3]					$ 1

[1] The company's equity securities are included in other assets in the interim Consolidated Balance Sheets.

[2] The company's investments in debt securities, which are available-for-sale, are included in "marketable securities" in the interim Consolidated Balance Sheets

[3] See Note 16 - Financial Instruments for the classification of derivatives in the interim Consolidated Balance Sheets.3. The company's equity securities are included in other assets in the interim Consolidated Balance Sheets.